Spacing device for punching, riveting, shearing, and other machines.



.J l" `N APPLICATION FILED JUNE 20, 1913.

.H wmwv@ mw.. wm.

SPAGING DEVICE FOR PUNCHING, RIVETI'NG, Sl-El-XRINGr, AND OTHERMACHINES.

.H .EN

' J. K. GRAHAM & G. LLMSMUSSBN.

SPAGING DEVICE FOB. PUNCHING, RIVETING, SHEARNG, AND OTHER MACHINES.

PPLIGATION FILED JUNE 20.1913.

1,081,826. y Patented Dec. 16, 1913.

3 SHEETS-SHEET 2.

J. K. GRAHAM & G. A. RASMUSSEN. SPAGING DEVICE FOR PUNGHING, RIVBTING,SHBARINQANBOTHBR MACHINES.

ABPLIOAT-ION FILED JUNE 20, 1913.

1,081,826. Pamnane. 16, 1913. Q 3 SHEETS-SHEET a.

. Q L@ @n Y Ll L-J J JOHN K. GRAHAM AND GEGBGE A. RASMUSSEN, FVlO'AllORE, VIRGINIA.

SPACING DEVICE FOR PUNCHING, BIVETING. SHEARNG, AND OTHER- lvACI-IINES.

To 077 whom. 't may concer/i Be it known that We, Joint if.. GRAHAM andGnocca A, Rasmussen, a citizen of the United States and a Subject of theEmperor of Germany, respectively, residing in dto anolie, cminty ofltoanoke, State of Virginia, have invented certain improvements inSpacing 'Devices for Punching, Rivetmg,

Shearing, and other Machines, of which the following is a specification.

This invention relates to certain improve ments in the means used forspacing holes a given distance apart in machines tor punching plates orin machines for cutting blanks from a plate, the cuts being arranged apredetermined distance apart.Y l

The invention can alsov be used for riveting or for any purpose wherepoints are to be spaced a given disllanceapart.

One object oi? the invention is to construct the mechanism so that itwill space accurately and automatically.v

A further object of the invention is to dispense with as many joints aspossible so that in the event of Wear there will be very little, if any,adjustment required.

A still further object of the invention is to utilize a 'magnetic clutchin connection vvith fluid mechanism which actuates a table upon which aplate, or other material, is placed in front of a punching or othermachine.

Another object of the invention is to provide a fixed stop and a movableabutment which allows the mechanism to travel in the space between. thefixed stop and the movable abutment.

The invention also relates to certain details which will be fullydescribed l1ereinafter.

ln the accompanying drawings: Figure l is a plan view, partly insection, of ourimproved spacing device; Fig. 2 is a longitudinalsectional view; Fig. 3 is an enlarged view of part of Fig. 2; Fig. 4,is-an enlarged view of the operating lever and clamp; Fig. 5 is atransverse sectional view on the line zi-a, Fig. 3, and Figli is a viewof a modii'cation.

lelierring to the drawings, l is the base of the spacing device on whichis mounted a pneumatic cylinder 2.

3 is the slideway for the sliding abutment 4.

5 is the slideway for the cross head 6 and Specification of iettersPatent.

Application ied June 20, 1913.

atcnted Dec. i6, 1913,.

Serial No. 774,854.

on one end of the base is a iixed abutment 7.

,Q a shaft on which is a gear Wheel meshing with a rack i0 secured tothe bed ll of a punching or cutting machine. Vhile 'We have shoivn thegear Wheel 9 meshing directly vvith the rack l0, the mechanism betweenthe shailt S and the bed 1l may be varied accordingr to lircumstancesand train oi" gears may be used instead of the rack and gear vvheelillustrated in the drawings. .i

0n the shaft is a magnetic clutch 12, of any suitable type, having oneelement secured to the shaft and anotherv element 13 which is provided-with a head 14. Connected to the cross head G is a rod l5 which isforlud, as shown in Fig. l, and which embraces the head llt of theniovable element of the magnetic clutch so that motiondmparted to thecross head will turn the clutch 12 and the shaftS, and, consequently,the table or other element of the machine to which it is connected.

Mounted in the cylindeil 2, which is a pneumatic cylinder in thepresentinstance, is a piston 1G having a rod 17 projecting on each sideot the piston and extending through'hoth heads 1S and 19 of thecylinder. (lne end ol' the rod 1T is attached to the. cross head whilethe other end has a bumper 20, which abuis against a plate 21 secured tothe sliding? abutment 4.- n the head 1S of the cylinder is a stuffingbox 22 and, in the present instance, a tubular eX- tensicn 23 ot thepiston 1G extends through a stalling box 24 in the head 19, but the constrnctien and arrangement of the cylinder and its piston may bemodified, as desired. 25 is a valve chest and 26 and 27 are portsleading from thechest to each end fi the cylinder 2.

,2S is ay valve havingY stem 29.

v30is an air inlet passage. communicating with both ends of the chest2:.' Fig. 3. desired.

31, 3l are twocnshion cylinders having pistons 32 therein connected by arod to an arm 3% on the cross head 6. tons 32am passages t' allow theliquid in the cylinder io pas` from one side thereof to th'J other andthere is bypass pipe 36 connected to boi n of each cylinder. In theby-pass pipe is a valve 3? which can ha This valve may also be modified,if

i, as `shown in ln the pis 105 turned to regulate the amount of liquidflowing from one side of the piston to the other through the pipe sothat the travel ot' the cross head 6 can be regulated by the movement ofsaid valve 37.

In order to allow the cross head to return to its normal position at agreater speed than that at which it moved forward, we provide pipes 38connected to both ends of each cylinder 3l and in each pipe is a checkvalve 39 which allows the liquid to How freely in one direction, butchecks the iow of liquid in the opposite direction. It will thus be seenthat the forward movement of the cross head 6 from the fixed abutment 7toward the mov-- able abutment 4 can be regulated by the valves 37 inthe by-pass pipe 36 of the cylinder 3l but, on the return movement, the

vcheek valves will open and will allow the cross head 6 to returnquickly to its normal position.

40 is a gage lever pivoted, in the present instance, to a traine 4l,although it may be pivoted to any fixed point according to the type ot'machine to which the device is attached. This lever is connected to thesliding abutment 4 by means of a connecting rod 42.

43 is a segment having graduations thereon7 as shown, and on the lever40 is a pneumatic clamp 44 consisting of a cylinder 45, a plunger 46,and two cam levers 47 pivoted to the lever 40 and connected to theplunger 46. These cam levers are arranged to grip the segment 43 whenthere is pressure in the cylinder 45 but as soon as the pressure isreleased a spring 48 withdraws the cam levers so that the lever 40 canbe turned on its pivot 41. The upper edge of the segment is notched, inthe present instance, as at 49, and pivoted tothe lever 40 is a springlatch 50 which is arranged to 'enter one ofthe notches in the segment soas to hold the lever 40 in the position to which it is adjusted untilthe pneumatic clamp 44 positively grips the segment. i

In the present instance, the cylinder 45 is connected by a hose or pipe51 to the forward end of the cylinder 2. When air is adiston 26 into thefor-- mitted through the Ward end of the cylinder it passes through thetube and actuates the clamp so as to firmly lock the lever 40 in theposition to which it is set just prior to the cushion 20, on the pistonrod 17, striking the abutment 4, which is locked in position by thelever 40 by setting said lever to any position prior to the admission ofair. On actuating the valve 28, the cross head 5 moves the table,.orother device to which it is connected, a given distance according to thelost motion between the fixed abutment 7 and theend of the cross head 6,as limited by the movable abutment 4.

52 is a push switch Vlocated at the hand grip of the lever 40. Thisswitch is connected to the magnetic clutch in any suitable manner.' Whenthe operator commences to move the lever 40, lie can actuatc the switchto connect the two elements of the clutch. The switch may be so arrangedthat it can be opened again to release the mechanism of the clutch or itmay be held by the operator during the movement of the lever.

lVe prefer to use a magnetic clutch, as it can be so arranged that itwill grip the elements to be moved prior to the movement of theactuating element. The type of niagnetic clutch used may be variedwithout departing from the essential features of the invention. l

In some instances magnetic clutches may be employed where the parts aregripped prior to the rotary movement and ratchet mechanism (which wouldbe substantially a clutch) may be used for moving the shaft instead of aclutch.

In the majority of mechanical clutches, as now constructed, there is aslight slip which makes them undesirable for use in connection with anaccurate spacing device.

In Figs. 1 and 2, we have illustrated a fixed cylinder and a movableabutment but, as illustrated in Fig. 3, the cylinder may be arranged toslide and is directly connected by,a rod 42a to the lever 40a. The iston16 may be connected to the cross headpl in the ordinary manner and `mayabut against the rear end of the cylinder 2"t forming the movableabutment which is similar to the sliding abutment 4.

lVe claim:

l. The combination in a spacing device, of a clutch; an operating shafton which the clutch is mounted; a table geared to the said shaft; abase; a cylinder; a piston in' the cylinder; a cross head connected tothe cylinder; an adjustable lever; a movable abutment connected to thesaid lever for limiting the movement of the cross head in one direction;and a fixed abutment for limiting the movement in the oppositedirection.

2. The combination of a shaft geared to the mechanism to be actuated; aclutch on the shaft; a cylinder; a piston in the cylinder; a rodattached to the piston, said rod being connected to one element of/theclutch, the other element of the clutch being mounted on the shaft; afixed abutment to limit the movement of the piston in one direction;

.an adjustable abutment; and means for locking said abutment, theadjustable abutment limiting the movement of the piston in the oppositedirection. j

3. The combination of a base; a cylinder thereon; two slideways on thebase; a cross head mounted in one slideway; an' adjustable abutmentmounted in the other slide- Way; a piston in thecylinder; a rodconnecting the piston with the cross head, said rml being arrangeil i0ahnt againsi the :11ljustahle abniinent: :1 lixeil :ihntineni'en ihe:use \\'iih which the crew heail einnes in c011- iaet when nmvurg in unedirection; :1 shai'i cennei'ted te ihe ineehanihin ie be eperateil; :1.clutch un ihe .-l1:1i'i, une ele nent of the clinch being Secured tei'he iahali'; :intl means lur connecting ihe other element` te the rrehead.

'l-. The coinbinaiiun el' :1 hase; :1 evliniler 3 thereon; :1 piston inthe c vlnnler; ivm slide- \\:1 \'.s 11n the haw: :1 crues hexulnluunieil in une sliilen'ay; :111 :nliniahle ahuiineni nwuni'el inl theother sliilewav; :1 iieil 11hui nient in ihepath nl' the cree heail: :1ruil connerie@ i0 the pi inn in the cylinder :unl i0 the rre` heai'i:1111i haring :1 huniper :112 ranged te cinne in. venturi' with the:uljihiable abutment; :1 pivoieil lever; 1111111115. l'ur locking ihelever in the pusiiun tu which it is aelji-isteil; :1 rml eenneri'ing thelever with ilie'ailjusiable abnlneni: :1 shaft 'connected to the elementtu he :nlviust'eilg :1 el :ieh 11n the shaft, one part el' the rluiehbeing' :1tiaeheil thereto: :unl nieans connecting i'he ,other part elEthe rluieh in the creas heail s1) ihat the fixeil abutment \\'illliu1itthe Inoveineni et' the crues 1'1e:11l 1n one ilirertnnn the :ulnisiableabutment linniing he nnn'ennni in ihe opposite direction.

5. The eu111binaiiun in :1 Spacing ileviee, of :1 base; :1 lixeilabutment; :111 :nljueiahle abutineni; lneans4 for :uljniing sani latterabninlent; :r cylinder Heeureil to the base; :1 piston in thec\lincler,; :1 cross head' :1r-

rangeil if) ruine in cuniaer \vii'l1 Athe lixeil :ihutlnenl: :1 shaft;:1 clutch en ihe shaft:

cenneeted the crues head; :1 .second ryliniler; :1 pistou therein. alsoeunneceel ie ihe rru's heznlganil :1 hy-pziss 111 the 5:1111?.cyliniler.

i3. The einnhinaiieu 111:1 spacing' device,`

ieder' two :nlilitinnal cylinder@- havin paesag'r rml#v attached te iiheCross head, h vpass pipe connunuicating with both :111115,- ei i'he.hy-pass pipe' ur regulai'ingA the ach cylinder: :1111i :1 reiiilaingvalve i:

111mv oi the muh: pinten reelancl its cron heafl.

7. 'lhe eu111binaiin11 in a Spacing machine. uf :1 haw; :1 lixerlabuiinen thereon; im ail jusiahle abutment :ilso'un the hase; a ieierrunnerieil tu .he adjustable ahunu-ni; :neem lur :nlliusiine' andlurking),- saiil lver; a cyliniler; :1. piston therein; :1 roel e i Ythrough ihe cylinder: :1 eren# hemi seenreil to one. end el the reel,izhe other eral 11E ine rofl being arianged Le come in Contact with the:ulinsi'ahle abun'ient; :1 Valve for regulaiine` he passage of liquid Lethe cylinder; :1 ehait connected i0 the 111e1'ha11is111 i0 be spareil;:1 eluteh nienni'ed en ihe shaft;

mean eunneciine; the clutch to the cross heail: :1 secon/el c vlinilerhaving :1 piston therein :1111i a rail, said reil being connected tu theeinen head; :1' bhv-pas pipe connnnniraiing with beth enilcs of he saidCylinder; :1 regulating valve in said passage: and :1 sei-enel passageemnnuuiieaiiiig with Both e11 l et. ihe c vlineler :nul having a cheekvalve therein,

f4. eui11hinatie11 in :1 spacing device, nl :1 hase; :1 iixeil:1l111i'111e11i5vthereong an :1djusiahle :1`i111i111eni :1h-0 1111 the.hase;- a cylinder: a piwin therein: :1 pisien reel; :1 cross head tuwhich the piston soil is connected; wahl crews head beingarranged i0come in runtaei with the lixeil abutment, the 0pp'0-` ene enil nf thered being arranged te come in reniaei wiih the adjustable abutment; apivot-1l lever; :1 rml. connecting ihe lever with the adjustableahutlnent; asegnient; :1 elneh for lurking the lever in the; pesiiiun iewhich it i5 :nljnsi'eil: :1 c-lni'ch 011 the shalt g :1111i meansrunneei'ing ihe eluieh \vii'.h the, ere-ss heznl.

l), The, com m a hase; :1 lixeil :ilmtincnt thereon; :1n 'acljiisiahleabutment` 11l -0 en ihe hase; :1 cylinder; :1 piston therein; a pis-i011rod; a crees heail 'in whieh ihe piston rod is c011- 11ecteri, Saidcross heini being arranged i0 come i1: eeniari with the tixeil:1hui111e1'1t1, the eppesie enl'l of Vhe rofl being arranged to reine ineonae 'niih the adjustable ahntineni'; :1 piveieil iever; :1, rmlconnecting ille .lever wih he, mili"- .ahle abili/nient; :1 Seglneni; :1A-lulrn fin' locking 'the lever in the pee :which i: i1: :ulji ized; :1clutch o n ihe i it; means connecting' the clutch with the moss 1Serraeil ping the i'h lever e vvhieh iil che ciui'eh,

l0. '.i'he emnhinatiun in :1 `wpaciiqg device, :1 laee; a fixed:1hnt111eni1; an ailjustahle ahninxeni. arr eil ie slnle en ihe base; aer?" i'ieai'i, rfa-e arranged 'te slide 011 the :1 aci leeriieu'. :1S iecome in eeniact the ixeil ahnin'ieni; :1 cylinder; 11 pia ierein; areci. exiendng through the f :1111i Connected to the Gruss head, said:ed infine* :nfranged te genie in Contact iviih he ailinsmh eahuenieniz; :1, shaft;

elnch un rh-:e shaft; means connecting the. eluieh with the cross head;-a. lever; :1` roti ennneciing the lever with vihe movable abnin'ient; :1fluid operated .clutch carrlefl by izhe lever and arranged te engagethesegrneni.; a pipe leading from i e ed ge ,l prier i0 being held hymijn bina'iun in :1 spaeing device,

ail, ihe Saul segment having a;

the cylinder of said clutch to the main cylinder so that when liquid isadmitted to the main cylinder the lever is clutched to the segment priorto the piston rod striking the adjustable abutment.

1l. The combination in a spacing device, of n magnetic clutch; anoperating shaft on which one element of the clutch is mounted; @,gtablegearedto said sha-ft; a base; a fixed abutment on the base; a cylinder;a `piston .in the cylinder; a cross head connected .to

the cylinder; means for connecting the other y element of the magneticclutch to the cross head; an adjustable hand lever; a movable abutmentconnected to the said lever for limiting the movement of the cross headin one direction; a fixed abutment for limiting the movement of thelever in the opposite direction; and a push switch on the leverConnected to the magnetic switch.

In testimony whereof, We have signed our names to this specification, inthe presence of two subscribing witnesses.

JOHN K. GRAHAM. GEORGE A. RASMUSSEN. Witnesses:

CLYDE T. Monm, WM. A. BARR.

